Supported files and limits

Check supported file extensions and the documented limits on document size, extraction schemas, and prompts before sending a Transform request.

The Transform web app and API use the following file types and input limits. The Transform MCP server supports a broader file-type list. See MCP supported file types.

Limit	Value and scope
Document upload	50 MB per document on Upload, Parse, or direct Extract. Exact byte boundary is not specified here.
Supported extensions	.bmp, .docx, .heic, .jpeg, .jpg, .pdf, .png, .pptx, .tiff
JSON extraction schema	1,048,576 serialized bytes for a parse_id request. Multipart schema declares a maximum string length of 1,048,576.
Prompt	1,048,576 UTF-8 bytes per request.

Use one document per request. The Transform API does not currently support URL ingestion, presigned uploads, or multi-document uploads.

No public values are specified for result size, request rate, or concurrent jobs. Treat those limits as unknown and do not assume unlimited capacity. If the API returns rate_limited or quota_exceeded, follow recovery guidance.

See Parse reference and Upload reference.